atomic_long_...turn_relaxed(9)

📦 version 7.3.1, in nixpkgs unstable

✨ atomic_long_dec_return_relaxed — Kernel API Manual, section 9 ✨

okay so bestie, you found the atomic_long_...turn_relaxed(9) page — welcome to the Kernel API Manual, section 9, the little corner of the docs where atomics live. this one's a single-function baddie and honestly? she's lowkey iconic. let's go 💅

🌸 NAME 🌸

atomic_long_dec_return_relaxed — atomic decrement with relaxed ordering

like, she decrements. atomically. relaxed-ly. and she returns. the whole package 💖

🦋 SYNOPSIS 🦋

long atomic_long_dec_return_relaxed (atomic_long_t *v );

yes the spacing is doing whatever it wants, that's just how the manpage came, don't come for her 🫶

🎀 ARGUMENTS 🎀

  • v — pointer to atomic_long_t. that's it. that's the whole argument. she's low maintenance ✨

💜 DESCRIPTION 💜

okay so what she actually does: she atomically updates v to (v - 1) with relaxed ordering. one clean little decrement, no drama, no extra memory-barrier nonsense around it. it's giving efficiency 💅

⚠️ no cap, important: she's unsafe to use in noinstr code. like, genuinely. if you're in noinstr land, use raw_atomic_long_dec_return_relaxed there instead. do not finesse this, fr fr 😭

⭐ RETURN ⭐

she gives you back the updated value of v. so if v was 7, you get 6. if it was 0... well, she decremented it, that's all we're saying 🍓

🔥 SEE ALSO 🔥

the receipts first — Kernel file ./include/linux/atomic/atomic-instrumented.h.

and then, bestie, the entire extended family. i'm not exaggerating, this is the whole group chat. buckle up 💀

🌈 the atomic_* crew

🧚 the atomic64_* era

👑 the atomic_long_* squad (our girl's family)

and that's the whole page bestie, you ate that 💖✨

this cutie lives at source ./include/linux/atomic, dated October 2026, filed under the page title atomic_long_...turn_relaxed(9) — section 9 forever 👑 bye ily 🫶🌸

📦 where this page comes from